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29-399: LHD can mean: Landing helicopter dock , a type of warship. Large Helical Device , a major Japanese nuclear fusion reactor. Leatherhead railway station , Surrey, England, by National Rail station code Left hand drive, a vehicle with the driving controls mounted on the left side of the cabin. Used in most countries where traffic travels on

58-525: A $ 70.8 million U.S. Navy contract was awarded to Huntington Ingalls as its latest installment toward acquiring long-lead-time materials for LHA-9. The award was offered by the Naval Sea Systems Command, Washington, D.C. On 27 October 2022, the U.S. Navy awarded Ingalls Shipbuilding a $ 2.4 billion contract modification for detail, design, and construction of LHA-9. The ship's name was announced as USS  Fallujah on 13 December 2022. LHA-10

87-466: A vehicle used in underground mining. Local health department , government agencies in the United States. Lake Hood Seaplane Base near Anchorage, Alaska (FAA location code: LHD) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title LHD . If an internal link led you here, you may wish to change the link to point directly to

116-573: A well deck for amphibious warfare in their sterns to contain landing craft , such as the LCAC, as in Tarawa -class LHAs and Wasp -class amphibious assault ships. The addition of a well deck will leave less space for aircraft on board the ships, but the "Early Operational Assessment" of 2005 criticized the "Flight 0" design because the expanded aviation facilities gave no space for a well deck. Also, USS America has reduced stowage space for military vehicles, and

145-599: Is similar in size to the French Charles de Gaulle and the Indian Vikramaditya fixed-wing aircraft carriers . Also, while more than 124 feet (38 m) shorter, America class ships are of comparable displacement to the former US Navy Midway -class aircraft carriers . Ships of the America class can be used as a small aircraft carrier with a squadron of jet fighters plus several multipurpose helicopters, such as

174-562: The America class for its fleet of amphibious warfare ships. In January 2014, the U.S. Navy began taking measures on America in order to reduce damage from excessive heat given off by the F-35B and MV-22 to prolong the life of the flight deck. The F-35B engine gives off much more heat than the previous AV-8B Harrier STOVL fighter and the MV-22 Osprey's heat exhaust has been known to damage flight decks. Plans include 14 different modifications to

203-498: The America class is based on that of USS  Makin Island , the last ship of the Wasp class, but the "Flight 0" ships of the America class will not have well decks , and have smaller on-board hospitals to provide more space for aviation uses. Although they carry only helicopters and V/STOL aircraft, the America class, with a displacement of about 45,000 long tons (46,000 t),

232-516: The MH-60 Seahawk . They can carry about 20 to 25 AV-8B, F-35Bs, or a mixture of the two, but the future ships of this class, starting with USS  Bougainville  (LHA-8) , will have smaller aircraft hangars to leave room for larger amphibious warfare well decks. America is based on the design of USS  Makin Island , itself an improved version of the Wasp -class amphibious assault ships with gas turbine power. About 45 percent of

261-556: The People's Liberation Army Navy (PLAN), though only regarded as amphibious assault ships in their native China , are considered LHDs in NATO reporting names . The landing helicopter assault (LHA) is a similar USN hull classification with two classes that both precede and follow the ships classed LHD. Most LHAs also have well decks of a comparable size to LHDs, with the exception of the first two America -class ships (LHA-6 and LHA-7), which lack

290-551: The United States Navy (USN). The class is designed to put ashore a Marine Expeditionary Unit using helicopters and MV-22B Osprey V/STOL transport aircraft, supported by AV-8B Harrier II or F-35 Lightning II V/STOL aircraft and various attack helicopters. The first of these warships was commissioned by the U.S. Navy in 2014 to replace USS  Peleliu of the Tarawa class ; as many as eleven will be built. The design of

319-477: The flight deck . This would remove the current restriction on MV-22s to land on spots 5 and 6, and also giving room for four MV-22B, three F-35B Lightning IIs, or three CH-53Ks to use the flight deck. In 2008, the procurement of Flight 2 ships was tentatively planned for 2024, but that might not be practical or affordable by then. A modified version of the design of America , designated the MPF(F), LHA(R), or T-LHA(R),

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348-417: The "Flight 0" design of this class is based on that of Makin Island , but with its well deck omitted to allow more room for aircraft , their spare parts and weapons, and their fuel. The gas turbines of Makin Island , America , and their successors use JP-5 fuel which is the same fuel used by their helicopters , the jet engines of their AV-8B Harrier and MV-22 Osprey aircraft and, in future ships,

377-472: The Marine Corps wants to keep amphibious ships farther offshore. For this Marines will be transported ashore in larger and longer range MV-22 V/STOL aircraft. To accommodate these requirements, America has twice the displacement of the retired Iwo Jima -class amphibious assault ships . The America -class amphibious assault ships are engineered with a (CODLOG) hybrid-electric propulsion system derived from

406-596: The gas turbines of the Landing Craft Air Cushions (LCACs) that they could carry in their well decks. This commonality greatly simplifies the storage, distribution, and use of the fuels. The typical aircraft complement for the first two vessels is expected to be twelve MV-22B Osprey transports, six F-35B Lightning II STOVL multi-role jet aircraft, four CH-53K heavy transport helicopters, seven AH-1Z / UH-1Y attack/utility helicopters, and two Navy MH-60S Knighthawks for air-sea rescue . The exact make-up of

435-474: The intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=LHD&oldid=1214653853 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Landing helicopter dock The United States Navy (USN) and the Royal Australian Navy (RAN) use

464-655: The late 1970s. In that case, Marines first had to be moved onto ships that had well decks. The third ship of the class (USS Bougainville ) will be the first in its class with a well deck for deploying amphibious vehicles. While there was emphasis on lighter ground vehicles in the late 1990s, up-armored and heavier vehicles were used during operations in Iraq and Afghanistan. Future counterinsurgency operations require ships that can carry and deliver those vehicles, including through use of shore connectors; cargo lift requirements are met more expensively by aircraft airlifting equipment. Adding

493-543: The one used on Makin Island . The ships can use gas-turbines for high speeds and the diesel-electric engines when required. Setting the beam of America at 106 feet (32 m) was dictated by the need for these ships to pass through the Panama Canal . The Congressional Budget Office found that if before 2040 the price of oil reached and remained above $ 140 per barrel then the use of nuclear propulsion for LHX-class ships would be more cost-effective. The LHX or LH(X)

522-650: The right-hand side of the road . Liechtenstein Homeland Service , a defunct corporatist party in Liechtenstein . Limburgse Handbal Dagen , a handball tournament in Limburg . Linear heat detection , a type of fire alarm system utilized in tunnels and special hazards. Litterarum Humanarum Doctor , Latin for Doctor of Humane Letters , an honorary academic degree for persons with significant accomplishments in fields other than science. Load, haul, dump machine ,

551-791: The ship and limiting the number of flight operations that are conducted off the deck. The U.S. Navy is looking for cost-effective solutions that will not affect the combat effectiveness of America . Restricting the number of flight operations is not expected to decrease its usefulness as amphibious assault ships are made to support quick assaults, while full-sized aircraft carriers have the mission of conducting sustained air operations. Lessons learned from these measures will be applied to Tripoli and Bougainville under construction, which will allow them to perform "complete unrestricted operations." Minor modifications to America are as small as putting covers over life rafts and refueling stations and moving antennas. Further warships in this class will have

580-497: The ship's aircraft complements may vary according to their missions. They can carry about 20 AV-8Bs or F-35Bs, and 2 MH-60Ss, to serve as a small aircraft carrier as demonstrated by landing helicopter dock (LHD) operations in Operation Iraqi Freedom . The U.S. Marine Corps is now more concerned about anti-ship missile attacks from fast attack craft and long-range precision fires from land. To counter such attacks

609-457: The ship's sponsor, Lynne Mabus, wife of Secretary of the Navy, Ray Mabus. Tripoli was officially delivered to the U.S. Navy on 28 February 2020. On 13 June 2014, the U.S. Department of Defense announced that it had awarded a contract worth for $ 23.5 million to General Dynamics National Steel and Shipbuilding Co., San Diego, California for design and development work on LHA-8. On 14 December 2021,

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638-517: The size of its hospital was reduced by two-thirds with respect to the Wasp -class ships. Before he became the Under Secretary of the Navy , Robert O. Work also brought into question the usefulness of an amphibious warfare ship without a well deck. The concept of the landing platform helicopter (LPH) had failed when their helicopters met enemy anti-aircraft systems off the coast of Lebanon during

667-650: The term as a specific hull classification symbol . Examples of this kind of ship include the USN's Wasp class , French Navy's Mistral class and ships of the Spanish Navy 's Juan Carlos I class including those designs based on the class, such as the RAN's Canberra class . Other nations also use the designation for their vessels, such as the Republic of Korea Navy for its Dokdo class . The Type 075 and Type 076 classes of

696-493: The well deck entirely to make room for larger hangars . However, LHA-8 will feature a well deck, returning the terms to their more interchangeable state. This United States Navy article is a stub . You can help Misplaced Pages by expanding it . America-class amphibious assault ship The America class (formerly the LHA(R) class) is a ship class of landing helicopter assault (LHA) type amphibious assault ships for

725-712: The well deck will require the ship's island to be slightly smaller compared to its two predecessors. Early design work with funds will begin in 2015, detailed design work and construction will start in 2017, and the LHA-8 will enter service in 2024. The program started in July 2001, with development beginning in October 2005, the production decision was made in January 2006, and construction of LHA-6 began in December 2008. Northrop Grumman Shipbuilding

754-562: Was a warship that was proposed in the late 1990s to replace the Tarawa -class amphibious assault ships , but with a dry deck for hovercraft rather than a floodable "well deck". After 2000, the LHX, the "Amphibious Assault Ship Future Replacement", was put forward to replace all of the LHDs. The new LHX could be a Flight 2 design of the America class built with a well deck and a smaller island superstructure , which would give it 20 percent more capacity on

783-490: Was awarded $ 48.1M for "additional planning and advanced engineering services in support of the LHA replacement (LHA[R]) Flight 0 amphibious assault ship (LHA-7)" on 28 October 2010, to run until May 2012. It was scheduled for delivery in 2017. In January 2011, development problems led to the F-35B program being delayed two years, and plans for LHA-7 could change if the F-35B were to be canceled. In April 2012, Contract N00024-10-C-2229

812-501: Was issued to Huntington Ingalls Industries , in which funding for steel plate purchases for LHA-7 was planned, and announced the requirement for an additional four ships (to LHA-10). On 4 May 2012, Secretary of the Navy Ray Mabus announced the selection of USS Tripoli as the name for the Navy's next large-deck amphibious assault ship (LHA-7). On 20 June 2014, Ingalls Shipyards, authenticated Tripoli ' s keel in ceremony by

841-688: Was proposed for two ships of the Maritime Prepositioning Force (Future). The MPF(F) is the Navy's concept for a "sea base" to support operations ashore starting in about 2025. These two ships would hypothetically be crewed by civilians from the Military Sealift Command and not armed with weapons. Funding for the MPF(F) and the LHA(R) was tabled by the Senate Armed Services Committee in the fiscal year 2008 budget. The U.S. Navy now intends to buy more ships of

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